N2-fixing cyanobacteria: ecology and biotechnological applications

Heimann, Kirsten, and Cirés, Samuel (2015) N2-fixing cyanobacteria: ecology and biotechnological applications. In: Kim, Se-Kwon, (ed.) Handbook of Marine Microalgae: Biotechnolgy Advances. Academic Press, London, UK, pp. 501-515.

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Abstract

Cyanobacteria were the first organisms capable of oxygenic photosynthesis on Earth. Due to this trait and their wide distribution in freshwater and marine waters, they are important primary producers in aquatic environments. Some cyanobacteria are capable of atmospheric nitrogen gas (N2) fixation, allowing them to sustain growth under nitrogen-limiting conditions. This chapter provides an introduction to the physiology and genetics underpinning N2 fixation, the different modes of N2 fixation realized in different orders, and the phylogeny of nif genes, which encode components of the nitrogenase complex. We provide a brief overview of freshwater species and the important marine cyanobacterium Trichodesmium, then focus on the biological applications of N2-fixing cyanobacteria for wastewater metal remediation, biofertilizers, bioenergy production (e.g., hydrogen gas, which is a byproduct of N2 fixation), and other high-value products (e.g., pigments such as phycocyanin and phycoerythrin as antioxidants, exopolysaccharide-derived cosmetics, ultraviolet sunscreens).

Item ID: 40644
Item Type: Book Chapter (Research - B1)
Keywords: bioproducts, nitrogen fixation, cyanobacteria, biotechnology, aquaculture
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ISBN: 978-0-12-801124-9
Funders: Advanced Manufacturing Co-operative Research Centre (AMCRC)
Projects and Grants: AMCRC 2.3.4
Date Deposited: 17 Nov 2015 00:31
FoR Codes: 10 TECHNOLOGY > 1003 Industrial Biotechnology > 100302 Bioprocessing, Bioproduction and Bioproducts @ 40%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 40%
06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060701 Phycology (incl Marine Grasses) @ 20%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830199 Fisheries - Aquaculture not elsewhere classified @ 60%
85 ENERGY > 8503 Preparation and Production of Energy Sources > 850309 Production of Biofuels (Biomass) @ 20%
85 ENERGY > 8505 Renewable Energy > 850501 Biofuel (Biomass) Energy @ 20%
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